oj.uz

답안 #390836

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
390836 2021-04-17T06:20:48 Z Joshc Pinball (JOI14_pinball) C++11
100 / 100
 598 ms 48176 KB 
#include <cstdio>
#include <algorithm>
#include <set>
#include <unordered_map>
using namespace std;

#define ll long long
const ll INF = 1000000000000000000;
const int MAX_M = 100001;

int a[MAX_M], b[MAX_M], c[MAX_M], d[MAX_M];
ll dp[MAX_M], dp2[MAX_M], best[4*MAX_M], seg[13*MAX_M];

void update(int v, int tl, int tr, int pos, ll x) {
    if (tl == tr) seg[v] = x;
    else {
        int tm = (tl+tr) >> 1;
        if (pos <= tm) update(v<<1, tl, tm, pos, x);
        else update(v<<1|1, tm+1, tr, pos, x);
        seg[v] = min(seg[v<<1], seg[v<<1|1]);
    }
}

ll query(int v, int tl, int tr, int l, int r) {
    if (l > r) return INF;
    if (l == tl && r == tr) return seg[v];
    int tm = (tl+tr) >> 1;
    return min(query(v<<1, tl, tm, l, min(r, tm)), query(v<<1|1, tm+1, tr, max(l, tm+1), r));
}

int main() {
    int m, n, cur=0;
    scanf("%d%d", &m, &n);
    set<int> s = {1, n};
    unordered_map<int, int> z;
    for (int i=1; i<=m; i++) {
        scanf("%d%d%d%d", &a[i], &b[i], &c[i], &d[i]);
        s.insert(a[i]), s.insert(b[i]), s.insert(c[i]);
    }
    for (int i : s) z[i] = ++cur;
    for (int i=1; i<=m; i++) a[i] = z[a[i]], b[i] = z[b[i]], c[i] = z[c[i]];
    fill(&seg[0], &seg[13*MAX_M], INF);
    fill(&best[0], &best[4*MAX_M], INF);
    for (int i=1; i<=m; i++) update(1, 1, cur, c[i], best[c[i]] = min(best[c[i]], dp[i] = d[i] + (a[i]==1 ? 0 : query(1, 1, cur, a[i], b[i]))));
    fill(&seg[0], &seg[13*MAX_M], INF);
    fill(&best[0], &best[4*MAX_M], INF);
    for (int i=1; i<=m; i++) update(1, 1, cur, c[i], best[c[i]] = min(best[c[i]], dp2[i] = d[i] + (b[i]==cur ? 0 : query(1, 1, cur, a[i], b[i]))));
    ll ans = INF;
    for (int i=1; i<=m; i++) ans = min(ans, dp[i]+dp2[i]-d[i]);
    printf("%lld\n", ans == INF ? -1 : ans);
}

Compilation message

pinball.cpp: In function 'int main()':
pinball.cpp:33:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   33 |     scanf("%d%d", &m, &n);
      |     ~~~~~^~~~~~~~~~~~~~~~
pinball.cpp:37:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |         scanf("%d%d%d%d", &a[i], &b[i], &c[i], &d[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 13516 KB Output is correct
2 Correct 9 ms 13608 KB Output is correct
3 Correct 8 ms 13624 KB Output is correct
4 Correct 9 ms 13608 KB Output is correct
5 Correct 9 ms 13516 KB Output is correct
6 Correct 9 ms 13516 KB Output is correct
7 Correct 9 ms 13516 KB Output is correct
8 Correct 9 ms 13644 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 13516 KB Output is correct
2 Correct 9 ms 13608 KB Output is correct
3 Correct 8 ms 13624 KB Output is correct
4 Correct 9 ms 13608 KB Output is correct
5 Correct 9 ms 13516 KB Output is correct
6 Correct 9 ms 13516 KB Output is correct
7 Correct 9 ms 13516 KB Output is correct
8 Correct 9 ms 13644 KB Output is correct
9 Correct 9 ms 13648 KB Output is correct
10 Correct 9 ms 13552 KB Output is correct
11 Correct 9 ms 13612 KB Output is correct
12 Correct 9 ms 13692 KB Output is correct
13 Correct 10 ms 13644 KB Output is correct
14 Correct 9 ms 13644 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 13516 KB Output is correct
2 Correct 9 ms 13608 KB Output is correct
3 Correct 8 ms 13624 KB Output is correct
4 Correct 9 ms 13608 KB Output is correct
5 Correct 9 ms 13516 KB Output is correct
6 Correct 9 ms 13516 KB Output is correct
7 Correct 9 ms 13516 KB Output is correct
8 Correct 9 ms 13644 KB Output is correct
9 Correct 9 ms 13648 KB Output is correct
10 Correct 9 ms 13552 KB Output is correct
11 Correct 9 ms 13612 KB Output is correct
12 Correct 9 ms 13692 KB Output is correct
13 Correct 10 ms 13644 KB Output is correct
14 Correct 9 ms 13644 KB Output is correct
15 Correct 9 ms 13520 KB Output is correct
16 Correct 10 ms 13700 KB Output is correct
17 Correct 11 ms 13800 KB Output is correct
18 Correct 10 ms 13672 KB Output is correct
19 Correct 11 ms 13816 KB Output is correct
20 Correct 11 ms 13772 KB Output is correct
21 Correct 11 ms 13772 KB Output is correct
22 Correct 12 ms 14028 KB Output is correct
23 Correct 11 ms 13900 KB Output is correct
24 Correct 11 ms 13900 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 13516 KB Output is correct
2 Correct 9 ms 13608 KB Output is correct
3 Correct 8 ms 13624 KB Output is correct
4 Correct 9 ms 13608 KB Output is correct
5 Correct 9 ms 13516 KB Output is correct
6 Correct 9 ms 13516 KB Output is correct
7 Correct 9 ms 13516 KB Output is correct
8 Correct 9 ms 13644 KB Output is correct
9 Correct 9 ms 13648 KB Output is correct
10 Correct 9 ms 13552 KB Output is correct
11 Correct 9 ms 13612 KB Output is correct
12 Correct 9 ms 13692 KB Output is correct
13 Correct 10 ms 13644 KB Output is correct
14 Correct 9 ms 13644 KB Output is correct
15 Correct 9 ms 13520 KB Output is correct
16 Correct 10 ms 13700 KB Output is correct
17 Correct 11 ms 13800 KB Output is correct
18 Correct 10 ms 13672 KB Output is correct
19 Correct 11 ms 13816 KB Output is correct
20 Correct 11 ms 13772 KB Output is correct
21 Correct 11 ms 13772 KB Output is correct
22 Correct 12 ms 14028 KB Output is correct
23 Correct 11 ms 13900 KB Output is correct
24 Correct 11 ms 13900 KB Output is correct
25 Correct 34 ms 15892 KB Output is correct
26 Correct 91 ms 20036 KB Output is correct
27 Correct 243 ms 27180 KB Output is correct
28 Correct 162 ms 20600 KB Output is correct
29 Correct 181 ms 25204 KB Output is correct
30 Correct 222 ms 22212 KB Output is correct
31 Correct 431 ms 35704 KB Output is correct
32 Correct 357 ms 30956 KB Output is correct
33 Correct 63 ms 19920 KB Output is correct
34 Correct 215 ms 30728 KB Output is correct
35 Correct 349 ms 48052 KB Output is correct
36 Correct 598 ms 48124 KB Output is correct
37 Correct 495 ms 48052 KB Output is correct
38 Correct 479 ms 48176 KB Output is correct